US1150118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of lighting.
Assignee: General Electric Vapor Lamp Co
•
Filing: 1909-09-18
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Granted: 1915-08-17
•
Expires: 1929-09-18
Abstract
No abstract record available.
Inventors
- 👤 Peter Cooper Hewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:06
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/22; F21V7/24; F21V7/26; F21V9/00; F21V9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1918-08-16 | 1919-02-15 | 1919-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-08-16 | 1923-02-15 | 1923-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-08-16 | 1927-02-15 | 1927-08-17 | $7700.00 | Window Closed / Lapsed |